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Direct linkStacewicz, T.; Wasylczyk, P.; Kowalczyk, P.; Semczuk, M. – European Journal of Physics, 2007
A simple experiment is described that permits advanced undergraduates to learn the principles and applications of the cavity ring down spectroscopy technique. The apparatus is used for measurements of low concentrations of NO[subscript 2] produced in air by an electric discharge. We present the setup, experimental procedure, data analysis and some…
Descriptors: Research Methodology, Spectroscopy, Data Analysis, Physics
Peer reviewedJohnson, Eric R.; Alter, Paula – Journal of Chemical Education, 1989
Described is an experiment in which the student can ascertain the meaning of a negative result from a qualitative test by performing a more sensitive quantitative test on the same sample. Methodology for testing urinary glucose with a spectrophotometer at 630 nm and with commercial assaying glucose strips is presented. (MVL)
Descriptors: Biochemistry, Chemical Analysis, Chemical Reactions, Chemistry
